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  1. I cut/pasted a few 3gp files from my phone to my pc using a usb cable. The transfer seemed to go just fine except that when I tried playing the videos in my computer the first one was around a minute and a half long but it stops playing at 4 seconds. Also, the file size is only 12mb which would be too small for a minute and a half video. All of the other videos that were transferred work perfectly. I don't know if the file was damaged before transferring because I never played it on my phone. Could the transfer itself damage the file? and is there any way to recover it?
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  2. Formerly 'vaporeon800' Brad's Avatar
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    If it's content that you feel comfortable sharing, and it doesn't violate forum rules, just attach it here using the Upload files/Manage attachments button underneath the post text entry form and someone can take a look.

    I believe Windows is supposed to do a CRC to ensure all file transfers complete successfully. If that is correct, the file you have should match what was stored on the phone.

    https://askleo.com/how_do_i_fix_a_cyclic_redundancy_check_error_when_i_try_to_copy_a_file/
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  3. Originally Posted by vaporeon800 View Post
    If it's content that you feel comfortable sharing, and it doesn't violate forum rules, just attach it here using the Upload files/Manage attachments button underneath the post text entry form and someone can take a look.

    I believe Windows is supposed to do a CRC to ensure all file transfers complete successfully.

    https://askleo.com/how_do_i_fix_a_cyclic_redundancy_check_error_when_i_try_to_copy_a_file/
    Thank you for the reply but unfortunately I can't share this video. Here is what I got from mediainfo:

    Code:
    General
    Complete name                            : C:\Users\David\Desktop\New folder\20161008_785213589.3gp
    Format                                   : MPEG-4
    Format profile                           : Base Media / Version 2
    Codec ID                                 : mp42 (isom/mp42)
    File size                                : 12.5 MiB
    Duration                                 : 1 min 31 s
    Overall bit rate                         : 1 145 kb/s
    Encoded date                             : UTC 2016-10-08 16:45:03
    Tagged date                              : UTC 2016-10-08 16:45:03
    com.android.version                      : 6.0.1
    
    Video
    ID                                       : 1
    Format                                   : AVC
    Format/Info                              : Advanced Video Codec
    Format profile                           : High@L4
    Format settings, CABAC                   : Yes
    Format settings, ReFrames                : 1 frame
    Format settings, GOP                     : M=1, N=30
    Codec ID                                 : avc1
    Codec ID/Info                            : Advanced Video Coding
    Duration                                 : 4 s 765 ms
    Source duration                          : 4 s 768 ms
    Bit rate                                 : 17.0 Mb/s
    Width                                    : 1 920 pixels
    Height                                   : 1 080 pixels
    Display aspect ratio                     : 16:9
    Frame rate mode                          : Variable
    Frame rate                               : 30.000 FPS
    Minimum frame rate                       : 27.616 FPS
    Maximum frame rate                       : 30.120 FPS
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Progressive
    Bits/(Pixel*Frame)                       : 0.273
    Stream size                              : 9.65 MiB (77%)
    Source stream size                       : 9.65 MiB (77%)
    Title                                    : VideoHandle
    Language                                 : English
    Encoded date                             : UTC 2016-10-08 16:45:03
    Tagged date                              : UTC 2016-10-08 16:45:03
    mdhd_Duration                            : 4765
    
    Audio
    ID                                       : 2
    Format                                   : AAC
    Format/Info                              : Advanced Audio Codec
    Format profile                           : LC
    Codec ID                                 : 40
    Duration                                 : 1 min 31 s
    Bit rate mode                            : Constant
    Bit rate                                 : 256 kb/s
    Channel(s)                               : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 48.0 kHz
    Frame rate                               : 46.875 FPS (1024 spf)
    Compression mode                         : Lossy
    Stream size                              : 2.78 MiB (22%)
    Title                                    : SoundHandle
    Language                                 : English
    Encoded date                             : UTC 2016-10-08 16:45:03
    Tagged date                              : UTC 2016-10-08 16:45:03
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  4. Formerly 'vaporeon800' Brad's Avatar
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    The video is indeed too small to be 91 secs long.

    Maybe you could attempt to use some recovery software to undelete the file on your phone, if you haven't written to your phone's storage much in the past two days.
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  5. Originally Posted by vaporeon800 View Post
    The video is indeed too small to be 91 secs long.

    Maybe you could attempt to use some recovery software to undelete the file on your phone, if you haven't written to your phone's storage much in the past two days.
    Is there any software that you recommend?
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  6. Dinosaur Supervisor KarMa's Avatar
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    Originally Posted by vaporeon800 View Post
    I believe Windows is supposed to do a CRC to ensure all file transfers complete successfully. If that is correct, the file you have should match what was stored on the phone.
    I don't think it does, at least Win7 and below in my experience. For Win8-10, I doubt they changed it. As you have to read the newly copied file from start to end, which usually doubles the transfer time. Which is why I use teracopy for its error checking.
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